Carriage-feeding spring-barrel for type-writing machines.



L. C. MYERS. CARRIAGE FEEDLNG SPRING BARREL FOR TYPE WRITING MACHINES.

APPLICATION FILED MAR-31,19l1- Patented July 27, 1915.

Ti my, iFQVItIIiIIL COLUMBIA PLANGURAPH cc., WASHINGTON, B4 c.

TTE @TAT3 FATE @FFTTJE.

LEWIS 1c. MYER OIF BROOKLYN, NEW'XQRK, assIGNon, BY MESNE ASSIGNMENTS,TO

-ROYAL'myrnwnrrn'n COMPANY, rive, orivnw YORK, N. Y., A CORPORATION orNEW roan.

"CARRIAGE-FEEDINGSPRI1\TG- BARREL FOR TYPE-WRITING MACHINES.

Original application filed June 12, 1909, Serial No. 501,693.

To all whom it may concern .Be it known that I, Lnwrs C. MYERS, acitizen of the United States of America, residing in the borough ofBrooklyn, county of Kings, and State of New York, have invented acertain new and useful Improvement in Carriage-Feeding SpringBarrels forType-Writing Machines, of which the following is a specification.

This invention relates to the carriage feeding spring barrel o f-atypewriting machine and the application is a division of my applicationSer. No. 501693 filed June 12, 1909.

The purpose of the invention herein described is to provide ballbearings and also a simple and efiective construction by which thebarrel and its carrying shaft may readily be assembled.

In the accompanying drawings: Figure 1 is a side elevation partly insection of so much ofthe apparatus as is thought necessary to illustratethe invention. Figs. 2 and 3 are respectively a front elevation andtransverse section through a spring barrel of modified construction ascompared with what is shown in Fig. 1. Fig. 4c is a detail view partlyin section showing a spring barrel shaft such as is employed in theconstruction of Figs. 2 and 3; and Fig. 5 is a plan or front elevationof a spring barrel such as shown in Fig. 3 with the cover plate removed.Fig. 6 is an enlarged sectional view showing details of construction ofthe form of spring barrel shaft used in the construction shown inFig. 1. Fig. 7 is a View similar to Fig. 3 showing merely that thespring barrel shaft rod fitted in the spring barrel shaft sleeve may besquare in cross section.

The spring barrel 7 is mounted (Fig. 1) to rotate upon a shaft composedof a plurality of parts indicated in detail in Fig. 6, that is to saythere is a shaft 8 carrying at one end a worm gear 10 and reduced indiameter at the other end as at 8. Over the shaft fits a sleeve 9 havingan enlarged hub 9 carrying on its periphery a hook 9 for attachment tothe hub of the inner end of the motor spring. The sleeve 9 has a part 9of reduced diameter threaded at its end. The shoulder formed at thejunction of the part 9 and enlargement 9 is beveled as at 26. There is atapered opening in the Specification of LettersPatent.

Patented July 27, 1915.

Divided and this application filed March 81,

Serial No. 618,123.

'bevel end of a collar 29 fitting over the reduced part 9 of the sleeveand secured there to by a set screw 29 The reduced part 8 of the shaftis flattened on one side and the end of the clamp screw 29 passingthrough the reduced part 9 of the sleeve, impinges against the flatsurface. This prevents rota tion of the sleeve on the part 8 of theshaft. On the threaded end marked 30 of the reduced part 9 of the sleeveis screwed a collar or nut 31. This nut holds the parts together beforethe spring drum is mounted on the shaft 8 and affords means foradjusting the bevels of the inner half of the race way. The tension ofthe motor spring may be adjusted by a worm 18 actuating the worm gear 10and having a bearing in a part 12 of the barrel supporting bracket. Thereduced part 8 of the shaft instead of being flattened on one side maybe square in cross section and the sleeve may have a corresponding bore.The ribbon mecha nism may be driven by bevel gear 100 in the end of astud shaft carrying at its other end a ratchet wheel 101 engaged by aspring pressed driving pawl 102 pivoted in an arm on the side of thespring barrel.

Figs. 2 and 4 show a modification in which the spring barrel has adouble ball bearing. The shaft is provided with a worm gear 32 engagedby a worm 33 to adjust the tension of the spring. There is a sleevehaving a hub 34 on which is the spring securing hook 9. Each of theshoulders formed by the hub is tapered as at 35 to form one-half of aball race. One side plate 36 of the spring barrel casing is formed witha cup shaped recess 37 in which is seated a hard metal cup shaped ring38 forming one part of the ball race, the other part of which is formedby the bevel shoulder of the hub 34. The opposite ball race is formed bythe other tapered shoulder of the hub and the inner face of a ring plug40 screwing into the hollow hub formed on the other side plate 41 of thespring barrel. The reduced part 42 of the sleeve on this latter side ofspring barrel is shown as of skeleton construction, the body of which isof less diameter than the opposite side 36 and the connecting screws 45pass through lugs 46 at the periphery of the plate 41.

Fig. 5 is an elevation showing the inner face of side plate 36 of thespring barrel, it also being shown with symmetrically disposedopenings47.

Fig. 7 is a View similar to Fig. 3 and is intended merely to show thatthe reduced part 8 of the shaft may be square in cross section.

I claim:

1. Spring barrel mechanism for a typewriting machine, comprising aspring barrel provided with the outer part of a ball race way, a springbarrel shaft having a sleeve formed with a hub located within the barreland having a tapered shoulder and means for attachment of the inner endof the spring, a screw for connecting the sleeve and shaft for positiverotation together, and a ball bearing, one part of the race way of whichis formed by the tapered shoulder of the hub and the other part carriedbythe barrel.

2. Spring barrel mechanism for a type writing machine, comprising aspring barrel provided with the outer part of a ball race way, a springbarrel shaft having a sleeve formed with a hub located within the barreland having a tapered shoulder and means for attachment of the end of thespring, a screw for connecting the sleeve and shaft for positiverotation together, a ball bearing one part of the race way of which isformed by the tapered shoulder of the hub and the other part carried bythe barrel, a worm gear applied to one member of the shaft and acooperating worm for effecting adjustment of the tension of the spring.

3. Spring barrel mechanism for a typewriting machine, comprising aspring barrel provided with the outer parts of ball race ways, a twopart shaft one of which parts is a sleeve fitting over the other partand having a hub within the spring barrel, said hub having tapered endsand means for attachment of the inner end of the spring, means forconnecting the two parts of the shaft for positive rotation together,and a ball hearing at each side of the hub, part of the race-way of eachball bearing being formed by a tapered shoulder of the hub and the otherparts carried by the spring barrel.

In testimony whereof, I have hereunto subscribed my name.

LElVIS C. MYERS- lVitnesses E. B. Hnss, FRED J. Provo.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

